Using green Engen, they are the Mechanoid Equivalent to bandages
Made using Engen, derived from Ethium, these patches are placed over damage area, by certain Mechanoids. Mechanoids, made using Mechanical Cells, Proto-Matter, Active Metal and Cybermatter, can use these patches to repair minor wounds, and breaches in their armor. The patches are not reusable and once used, there is nothing but metallic sludge from the left over elements.
While in use, some patches are known to glow.
They are Mechnoid size square patches with a medical symbol(s) on them.